Tent office



E. GIMSON. Ore-Crusher.

Patented Jan. 8,1878.

HNIIUII 'UNITED STATES PATENT- OFFICE.

EDWARD crimson, or srALYBRIDeE, ENGLAND IMPROVEMENT IN ORE-CRUSH ERS.

. 'Specification forming part of Letters Patent N0. 198,936, dated Jannary 8, 1878 application led October 15, 1877.

To all whom it may concern:

Be it known that I, EDWARD GiMsoN, of Stalybridge, in the county 'ofLancaster, England, a subject of the Queen of Great Britain, haveinvented or discovered new and useful Improvements in the Constructionof Stone- Breakers; and I, the said EDWARD GIMSON, do hereby declare thenature of the said invention, and in what manner the same is to belperformed, to be particularly described and ascertained in and by thefollowing statement thereof, that is to say- The machines known as iBlake stone-break ers have only one breaking-j aw; consequently but onesize of stone can bebroken at a time. To further reduce the stone thejaw has to be reset and the operation repeated. Now, in my improvedmachine-of which Figure 1 shows a longitudinal section and Fig. 2 aplan-there are two adjustable crushing-j aws, working alternately ateach revolution of the eccentric shaft. The Working parts of the machineare inclosed in a strong rectangular frame, a, the ends whereof form twofixedserrated vertical jaws, b, which face inward. [inmediately oppositethese flxed jaws are two movable serrated jaws, c, hung upon trans-`verse shafts extending across the upper part of, the frame. Midwaybetween such movable jaws is fitted a vertical rocking lever, d,centered upon a transverse shaft, e, extending across the lower part ofthe machine. Rocking motion is communicated to the upper part of thislever by an eccentric, c', formed on the main transverse shaft g, andworkin g in a deep brass or other suitable bearing, h, which movesvertically in a, guide formed in the rocking lever. By this arrangementthe rotary motion of the eccentric imparts only a rocking movement tothe lever, the bearing h simply gliding up and down in its guide. I makethe bearing h and the bearings of the main and rocking shafts square, sothat, when worn on one face, by turning the blocks round a quarter of arevolution fresh wearingsurfaces are obtained, thus eecting aconsiderable economy of wea'r and tear. Suitable recesses are formed atthe lower part of each movable jaw, to receive the outer ends of aseries of toggles, z', forming adjustable stays, for giving motion tothe jaws. rllhe inner ends of these toggles enter corresponding recessesin the rocking lever, and each toggle has a handle, le, for removing itwhen required. When the rocking leveris working, reciprocatory motion isimparted to each jaw through the toggles, and the size of the brokenstone is regulated by the length of the toggle, the longer togglesproducing the smaller sizes.

rIhe distance between the fixed and movablejaws is regulated by twotension-rods, j, or equivalent adjustable connection, extending betweenthe lower inner angles of the movable jaws. The free ends of these rodsare united by a right-and-left-hand-threaded nut, 7c, by turning whichin either direction the threaded ends of the tension-rods are broughtnearer to or farther from each other, thus proportionately increasing ordiminishing the space between the jaws. Such rods, or wellknownsubstitutes which may be employed, also serve to keep the movable jawstight upon the toggles and rocking lever.

With my improved machine the operation of breaking stone and otherminerals is very greatly facilitated, and the product doubled. At thesame time the machine is far more economical in use, owing to itswearing parts being so thoroughly protected.

I claim as my inventionl. The combination, substantially as hereinbeforeset forth, of the fixed end jaws, the movable jaws, the rocking leverbetween the movable jaws, and the stays or toggle-connections betweenthe rocking lever and movable jaws, whereby each of said jaws isoperated upon by the rocking lever with the full power of the machine,and they are caused alten" nately to move toward the xed jaws, thusdoubling the amount of work which could be done in a given time by asingle set of jaws.

2. The combination, substantially as hereinbefore set forth, of theframe, the movable jaws, the shafts upon which they are supported l attheir ends, the rocking lever between said jaws, supported upon a shaftat its end oppotoggles loosely tting at their ends in the rocking leverand .movable jaws toadmit of adjustment of the jaws to vary the sizeofthe crushed stone.

E. GIMSON.

Witnesses:

SHIRLEY BOWDE,

33 Southampton Buildings,

London, W 0., Patent Agent. GEORGE HENRY PRIEST,

10 East Harding Street, Teftfn` Lane, E. C.

